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Finding the Fourth Proportional to 7,072.80, 10,604.12 and 2,687.84

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Solution

The fourth proportional to 7,072.80, 10,604.12 and 2,687.84 is: 4,029.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,072.80 : 10,604.12 = 2,687.84 : x
  2. Step 2: Convert to fraction form
    7,072.80/10,604.12 = 2,687.84/x
  3. Step 3: Cross multiply
    7,072.80x = 10,604.12 × 2,687.84
  4. Step 4: Simplify right side
    7,072.80x = 28,502,177.90
  5. Step 5: Solve for x
    x = 28,502,177.90/7,072.80
  6. Step 6: Final answer
    x = 4,029.83

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.